very rare and very local species in Belgium. Extinct in Flanders around
1949 and nowadays only occurring in the south of Belgium.
larva lives on several species of Viola. Hibernates as a half-grown larva.
adults fly from early May till late June with a peak onwards from 10
May till 10 June. During hot summers a partial second generation may
occurs in July.
Namur, Ave-et Auffe, 22 May 2004.
(Photo © Jean-Yves Baugnée)